CHAPTER 1 : Introducing ICT
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Transcript of CHAPTER 1 : Introducing ICT
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Hourly volume: h h Objective ::
Computer Netwoking literacy. Prerequisite :
Little knowledge about computer science. Content: What is Computer Networking (CN), The utility of CN, It’s characteristics, It’s applications, Wireless Network.
Reportes::
CHAPTER 1 : CHAPTER 1 : Introducing ICT
Leçon 22Computer Networking
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Networking is the practice of linking two or more computers or devices with each other.
The connectivity can be wired or wireless
What is Computer Networking (CN),What is Computer Networking (CN),
wired
wireless
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What is Computer Networking (CN),
The utility of CN,
It’s characteristics,
Establishing a local CN (LAN),
It’s applications,
Wireless Network,
ContentContent
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Imaging computers without network. How we can share files ?
The utility of CNThe utility of CN
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Imaging computers without network. How we can share resource (printer)?
The utility of CNThe utility of CN
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Imaging computers with network. How we can share files ?
The utility of CNThe utility of CN
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Imaging computers with network. How we can share resource (printer)?
The utility of CNThe utility of CN
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Imaging computers with network. we can use it as a communication medium
The utility of CNThe utility of CN
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Definition 2computers networking allow the process of
sharing Data and sharing resource between two or more computers
Shared Data
The utility of CNThe utility of CN
texte image video audio
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Definition 2computers networking allow the process of
sharing Data and sharing resource between two or more computers
Shared resources
The utility of CNThe utility of CN
printer CD/DVD modem Data Base Hard disk
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What is Computer Networking (CN),
The utility of CN,
It’s characteristics,
Establishing a local CN (LAN),
It’s applications,
Wireless Network,
ContentContent
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A computer network can be categorized in different ways, depends on:
1.Topology2.Geographical area3.Communication architecture
Characteristics of CNCharacteristics of CN
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A computer network can be categorized in different ways, depends on:
1.TopologyA network topology defines the structure, design or layout of a network
Characteristics of CNCharacteristics of CN
Bus Ring Star
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A computer network can be categorized in different ways, depends on:
2.Geographical area◦LAN (local area network) : class, building,◦MAN (Metropolitan Area Network): campus,
city,◦WAN (Wide Area Network) : country,
the world (Internet)
Characteristics of CNCharacteristics of CN
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A computer network can be categorized in different ways, depends on:
2.Geographical area◦WAN
Characteristics of CNCharacteristics of CN
LAN 1
LAN 2 LAN 3
Router
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A computer network can be categorized in different ways, depends on:
2.Geographical area◦WAN
Characteristics of CNCharacteristics of CN
Internet is the bigest WAN
Internet = Interconnection networks = wold-wide network
Interanet = private Internet
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A computer network can be categorized in different ways, depends on:
3.Communication architecture◦Client/server◦Peer to peer
Characteristics of CNCharacteristics of CN
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A computer network can be categorized in different ways, depends on:
3.Communication architecture◦Client/server◦Peer to peer
Characteristics of CNCharacteristics of CN
Server
Data
Resources
client
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A computer network can be categorized in different ways, depends on:
3.Communication architecture◦Client/server◦Peer to peer
Characteristics of CNCharacteristics of CN
Peer to peer =Each PC is Servers and clientsAt the same time
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What is Computer Networking (CN),
The utility of CN,
It’s characteristics,
Establishing a local CN (LAN),
It’s applications,
Wireless Network.
ContentContent
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Establishing a local CN (LAN)Establishing a local CN (LAN)1. PCs
2. Network Interface Card (NIC)
3. Communication support1- Cables 2- devises
Hub/switch
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Establishing a local CN (LAN)Establishing a local CN (LAN)4. Configuration (Protocol : TCP/IP and IP address )
5. Software
Network operation system : (WinXP, linux),
programs :
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Configuration : (Protocol : TCP/IP and IP address ):
Establishing a local CN (LAN)Establishing a local CN (LAN)
USAFR
ALG
Do you understand me?
Protocole= English Protocol = french
Protocol = Arabic
Protocol = communication language
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Configuration : (Protocol : TCP/IP and IP address ):
Establishing a local CN (LAN)Establishing a local CN (LAN)
Protocol = communication language
USA FR
ALG
Do you understand me?
Protocole= English Protocol = English
Protocol = English
yes
yes
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Configuration : (Protocol : TCP/IP and IP address ):
Establishing a local CN (LAN)Establishing a local CN (LAN)
Protocol = communication language
Protocole = TCP/IP
Protocole = TCP/IP
Protocole = TCP/IP
TCP/IP is the Protocol used in Internet
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Configuration : (Protocol : TCP/IP and IP address ):
Establishing a local CN (LAN)Establishing a local CN (LAN)
IP Adress = identité
USA FR
ALG
Hi, mohmmed
Protocol = English Protocol = English
Protocol = English
Hi, johName = joh Name = Phillipe
Name = Mohammed
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Configuration : (Protocol : TCP/IP and IP address ):
Establishing a local CN (LAN)Establishing a local CN (LAN)
IP Adress = identité
Protocol = TCP/IP
Protocol = TCP/IP
Protocole= TCP/IP
192.168.0.1
192.168.0.2
192.168.0.3
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Exemple:
Establishing a local CN (LAN)Establishing a local CN (LAN)
Câble torsadée
192.168.0.1192.168.0.2
192.168.0.3
Pro = TCP/IP
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What is Computer Networking (CN),
The utility of CN,
It’s characteristics,
Establishing a local CN (LAN),
It’s applications,
Wireless Network,
ContentContent
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Networking applicationsNetworking applications
City 1
City 2
City 4
City 3
City 5
Highway network
Road= link
support
Use = Applications
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1. The CN is used like a support of different applications, which circulate information.
2. The most famous are :
◦WWW◦E-mail◦Chat◦…
Networking applicationsNetworking applications
support
WWW , E-mail , Chat application
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Networking applicationsNetworking applicationsWWW
◦Acronym: World Wide Web,◦Utility: consult Web site, ◦Program: (navigator):internet explorer, firefox ◦Protocole : www.WebSiteName.com
.FR
.US
.DZ
.ORG
.Mil
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Networking applicationsNetworking applicationsE-mail
◦Acronym: Electronic-mail,◦Utility: exchange messages,◦Protocole : [email protected] ◦Program: outlook, navigator
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Networking applicationsNetworking applicationsChat
◦Acronym: Electronic-mail,◦Utility: discussion, ◦Program: skype, MSN
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What is Computer Networking (CN),
The utility of CN,
It’s characteristics,
Establishing a local CN (LAN),
It’s applications,
Wireless Network,
ContentContent
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principal
Wireless networkingWireless networking
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radio waves or microwaves
Wireless technologies
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types:
Wireless networkingWireless networking
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Access point
Without Access point= Ad hoc network
With Access point
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Vehicle Ad hoc network
Wireless networkingWireless networking
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Wireless networkingWireless networking
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Advantage:◦mobility and elimination of unsightly cables.
Disadvantage: ◦potential for radio interference due to weather,
other wireless devices, or obstructions like walls.